Improvement in hydrants



s. BLACKIE.

HYDRANT.

Patented Dec. 28, 1875.

FIEJ,

I INVENTDH.- Ali ATTEST.

Hum. (funk? 0 5 N FETER3, PHDTO-LITHOGRAFHER, WASHINGTON, DV 0 I 'NITEDSTATES PATENT OFFICE.

STEPHEN BLAOKIE, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-IIAIIF HI RIGHTTO ROBERT CHARLES, OF SAME PLACE. Y

IMPROVEME NT IN HVDRANTS.

Specification forming part of Letters Patent No. 171,499, dated December28, 1875; application filed October 8, 1875.

To all whom it may concern Be it known that I, STEPHEN BLAOKIE, aresident of the city and county of St. Louis, State of Missouri, haveinvented new and useful Improvements in Hydrants, of which the followingis a full, clear, and exact description, reference being hereby had 'tothe annexed drawing, making a part of this speci fication, in whichFigure 1 is a central vertical section, the valve and stem being shownin side elevation; and Fig. 2, a horizontal section on the line 00 w ofFig. 1.

Like letters indicate like parts.

My aim is to provide means whereby the seat of the Valve of a hydrantcan be readily reached for repairs and renewed. It further relates tothe valve-stem and the provision for draining the hydrant dischargepipe.

Referring to the accompanying drawing, A represents the valve-chest,having therein two chambers, a and a, arranged one above the other, andseparated by the horizontal partition B and the parts immediatelytherewith connected and hereinafter described. 0 represents a capcovering the chest, and for that purpose it is provided with a flange,c, which rests upon the chest-wall, the joint being suitably packed bymeans of an interposed elastic washer. D represents a part rigidlyconnected, by means of the ties (1 (Z d d, with the cap 0 above. It iscircular in form, and its a rim is threaded to screw into an opening inthe partition B, and it is also provided with a flange, d, similar tothe flange c on the cap 0, to form a joint with the partition, whichjoint is packed by means of an elastic washer. The part D is suitablyspaced from the cap 0, so that both of them can at the same time be putin place. E represents the seat for the valve. It is made to screw (frombelow) into the part D, and on its'inner side is made conical; and,also, its extreme lower edge e is rounded, as shown. F represents thevalve, made of elastic material. Its upper part f is conical, conformingto the inside of the seat E, and its lower part f is made horizontal,and large enough in diameter to come against the rounded edge e of theseat when the valve is closed. Grepresents the valve-stem, extendingupward through the cap 0 and stuffing-box H. The stem is squared at I,and above at J is rounded, the latter part being larger in diameter thanthe thickness of the squared portion below. This forms a shoulder at c.The opening in the cap 0, in which the stem moves, conforms to the stem--that is, in its upper part it is rounded, and below it is made square.The cap also, and at a point above the level of the bench 2', but belowthe bottom of the round part of the stem when the valve is closed, isprovided with a wasteopening, K. L represents the supply-pipe leading tothe chamber a, and M represents the discharge-pipe leading from thechamber a.

The operation is as follows: The valve being depressed, (and as shown inFig. 1,) water passes from the chamber a to the chamber a above, andthence up the pipe M to the desired level above the ground in which thehydrant is located. In this position of the valve the stem is depressed,so as to bring its round part against the waste-opening K, closing it.

To close the valve the stem is raised, bringing the conical part of thevalve against the inside of the seat, and the horizontal part againstthe rounded edge e of the seat. By this means a double bearing isobtained, and the water more effectually cut off. At the same time thesmaller squared part of the stem is opposite the Waste-opening K, andthe water standing in the discharge-pipe M drains down into the chambera, and thence up past the square part of the stem, and out the openingK. A particular advantage of my improvement, however, is the being ablefor repair to withdraw all the working parts of the construction fromtheir position in the valvechest, (which is down in the ground,) and torenew the seat without incurring the expense of renewing the remainderof the construcscrewing it therefrom, and thus a new seat can beinserted at will, while the other parts, upon which no wear comes, andwhich are not likely to wear out as speedily as the seat. can beretained. In this manner a construction is obtained whereby anydifficulty arising from the non-working of its movable parts can beeasily corrected, and also all the parts thereof upon which the mostwear comes can be replaced without incurring the expense of a.

new construction throughout.

What I claim is- 1. The valve-chest A, provided with the chamber a,pipe-M, cap 0, stem G, provided with the square I and round part J, and

waste-port K, combined and operating substantially as described.

2. The stem G, provided with the square part I, cap 0, part D, ties d d,&c., detachable seat E, and valve F, and chest A, provided with thepartition B, combined and operating substantially as described.

STEPHEN BLACKIE. Witnesses:

Orms. -D. MOODY, G. W. CUMMINGS.

